Sleep, salt, and the two things we actually keep in the bag. That's not a tease — that's the full answer. Fight week is not the time to experiment with new supplements or deplete yourself chasing a weight cut.
Sleep eight to nine hours. Increase sodium slightly if you've been sweating hard in training camp — your body needs it for muscle contraction. The two things in our bag: magnesium glycinate before bed, and electrolytes in the morning water. That's it.
Everything else — the pre-workout, the fat burner, the nootropic stack — stays home until after the fight. Recovery is not complicated. Execution is.